JPS5892009A - Inductive wire installing method for electromagnetic induction car - Google Patents

Abstract

PURPOSE:To stably make an electromagnetic induction car run on a magnetic substance, by minimizing the remolding for the magnetic substance present across induction wires, through a plurality of windings of the induction wires on the magnetic substance along the running direction of the car. CONSTITUTION:Induction wires 15 driving an electromagnetic induction car 10 on an upper plate 12a of a lifter 12 are wound on the plate 12a for a plurality of turns so that a closed loop can be formed in a vertical plane along the running direction of the car 10 until the voltage becomes almost equal to an induced voltage generated in a pickup coil 10a. Thus, the same amount of induced voltage can be produced in the upper surface plate 12a made of a magnetic substance and the remolding such as forming a part or all the plate 12a with nonmagnetic substance is not required.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for laying a guide wire for guiding an electromagnetic induction vehicle by generating a low frequency magnetic field.

In general, an electromagnetic induction vehicle used for transporting cargo in an unmanned warehouse etc., as shown in FIG. 2 is fixed on the left and right sides of the lower part of the electromagnetic induction vehicle body, and detected by nine pairs of pickup coils 4. The steering device is controlled by the output signal, and the vehicle travels along the guide Ii2.

By the way, when detecting the position of the guide wire 2 that generates a low-frequency magnetic field by the pickup coil 4 installed at the lower part of the vehicle body of an electromagnetic induction vehicle, it is necessary to cross the guide wire 2 to detect a magnetic object such as a bit's iron lid yard rail. If there is, it will be guided!
The low-frequency magnetic field generated from the magnetic body 112 cancels out the magnetic field generated by the eddy current 11 generated in the magnetic body, and is weakened, and as a result, the induced voltage generated in the pickup coil 4 decreases, causing the position of the induction -2 to decrease. Accurate detection becomes impossible.

According to past data, the length of the magnetic material along the guide wire 2 that crosses the guide wire 2 is within about 300 Io1 (that is, the length at which the pickup coil 4 cannot detect the position of the guide wire 2 is within about 300 Io1). ), the electromagnetic induction vehicle can pass over the magnetic material without any problem, but if it exceeds this, it becomes impossible to run the vehicle stably on the magnetic material.

For this reason, when the length of the magnetic material along the guide wire 2 that crosses the guide wire 2 exceeds 300w5, conventionally, the length along the guide wire 2 of the magnetic material is 300w on each side of the guide@2.
This problem was dealt with by methods such as modifying the entire magnetic material with a non-magnetic material (for example, concrete core), or changing the position of the guide wire 2. According to these methods, it takes a lot of time and effort to make modifications;
Furthermore, the cost of remodeling will increase, but there are other problems.

Also, if you rely on these solutions, you will not be able to convert some or all of the magnetic material to non-magnetic material, and there will be no space to change the wiring route! There were also problems such as the inability to use Krj and electromagnetic induction vehicles.

The present invention has been made in consideration of the above-mentioned circumstances, and provides that - modification to the magnetic material existing across the conductive wire is limited to a maximum of 7J, and an electromagnetic induction vehicle can run stably on the magnetic material. The purpose of the present invention is to provide a guide wire installation method that enables the following.

Hereinafter, this invention will be explained based on the embodiment shown in the drawings.

Figures 2 to 6 show the present invention applied to a case where a lifter for transferring a load 1iIII whose upper surface is formed of a magnetic material such as an iron plate is provided across a guide wire. , is a forklift-type electromagnetic induction vehicle that transports cargo 11 such as a Monoke container indicated by the symbol IO in the figure, and 12
Fi is a lid formed on the floor 13 and installed on the nine bits 14 for transferring (loading and unloading) loads 1i1111 to and from the electromagnetic induction vehicle 10. This spacer 12 holds an upper surface plate 12m formed of an iron plate and on which the luggage 11 is placed so as to be movable up and down from a floor surface 13 formed of concrete.

Further, 15 is a guide wire for guiding the electric WBn guide wheel @lO.

1Ktj under the vehicle body at the front and rear (right and left in FIG. 2) of the electromagnetic induction vehicle 10, respectively, 10 m of pickup coils for detecting the position of the guide wire 15 when traveling around a corner and when traveling backwards.
But 4 on the left and right so as to sandwich the guide wire 15! One r piece is provided each.

The guide wire 15rj, the groove 13a formed in advance in the concrete floor surface 13 on the concrete floor surface 13 located before and behind the lifter 12 (right and left of the lifter 12 in FIG. 2), and the floor surface 13.
By filling $13m with backfilling material 13b of non-magnetic material such as cement, it is buried in the floor surface 13m and laid in the following state, while electromagnetic Guide line 15 that guides the guided vehicle 10
is the induced voltage generated in the pickup coil 1051 when the electromagnetic induction vehicle IO is running on the top plate 10a, and the induced voltage generated in the pickup coil Ion when the electromagnetic induction vehicle IO is running on the floor surface 13 of the concrete IJ-1. Induction 41i115 is the electromagnetic induction vehicle 1
The wires are wound around the top plate 12a a plurality of times (-5 times in the example) in parallel and close to each other so as to form a closed loop in the vertical plane along the 00 running direction.

It is fixed to the top plate 121 by a guide edge 15Fi wound on the top plate 12a and a holding plate 16 made of a material such as stainless steel. This presser plate 16tfi, electric a
Vcn4 so as not to hinder the running of 111 military guide vehicle 10.
The length of the WA 15 in the installation direction is within 300°.

The ends 12b and 12cri of the front line in the traveling direction around which the guide 4115 of the top plate 12m is wound prevents the wound guide 15 from rubbing against the wall surface of the bit 14 when the top plate 12m moves up and down. It is rounded and concave from its surroundings. In addition, both ends of the guide edge 15 wound on the top plate 12a are once placed in the bit 14 to provide a margin for the required length when the top plate 12m is raised and lowered, and then each end is placed in the concrete. It is connected to a guide wire 15 buried in the floor surface 13.

When the induction $15 is given slack as described above, there is a section in which the position of the induction edge 15 cannot be detected by the pick-up coil lO of the electric 1SM guided vehicle 10.
It is formed between the concrete floor surface 13 and the top plate 12m, and the length of this section is set to about 30 (within 1 g) so as not to cause any trouble to the running of the electromagnetic induction wheels 10. .

In the above-mentioned embodiment, the number of times the upper plate 12m is wound is five times, but depending on the presence or absence of the magnetic material intermediate holding plate 16 forming the upper plate 12g, the induction
It goes without saying that if the magnetic field is weakened differently by Kd, the number of windings should be selected appropriately.

In the above-mentioned embodiment, the guide wire 15rj for guiding the electromagnetic induction wheel IO on the top plate 12m, the top plate 1
The method of winding the guide wire 15 on the top plate 12m-\ is as follows. Any winding method may be used as long as a plurality of guide wires 15 are provided on the top 11 of the 12 layers of the face plate in which the current flows in the same direction along the running direction of the electromagnetic induction wheel 10. Not limited to. For example, the thickness of the top plate 12m is thin,
If there is a possibility that the magnetic field due to the guide wire 15 passing above the top plate 12m may be influenced by the magnetic field due to the guide wire 15 passing below the top plate 121, as shown in FIG. The guide line 15ij passing under the top plate 12m runs horizontally from the guide edge 15 extending above the top plate 12m.
Wires are spaced apart in the vertical direction (in Fig. 7), and
As shown in the figure, it is preferable to lay the wires at a distance in the vertical direction (in the vertical direction in Figure 8).

As explained above, the method of the present invention is applicable to the case where there is a top plate 121 made of a magnetic material across the I4 line 15 installed on the running path, and in which the top plate 12aK electromagnetic induction wheel 100 is moved in the running direction. Since the induction edge is wound a plurality of times along the upper surface plate 121, by appropriately selecting the number of windings, the pickup coil 10m of the electromagnetic induction wheel 10 running on the top plate 121 is formed of a non-magnetic material such as concrete. It is possible to generate an induced voltage of the same force as when driving on the 9th running road, and therefore the force that is formed of a magnetic material and part or all of the 9th top plate 12m is made of a non-magnetic material. The electromagnetic induction vehicle 10 can be accurately and stably run on the top plate 12m made of magnetic material without any major modification.

[Brief explanation of the drawings] Figure 1 shows the electricity! Figures 2 to 6 show an embodiment of the present invention, and Figure 2 is a schematic side view, and Figure 3 is along the line ■-■ in Figure 2. A sectional view, FIG. 4 is a sectional view taken along the rV-rV line in FIG. 2,
FIG. 5 is an enlarged view taken along arrows V-■ in FIG. 2, FIG. 6 is an explanatory view taken along arrows Vl-Vl in FIG. 5, and FIG. 7 is a schematic diagram showing another embodiment of the present invention. The plan view and FIG. 8 are schematic side views showing still another embodiment. lO...Electromagnetic induction vehicle, 10m...Pickup coil, 12...Lifter, 121...Top plate, 13
...Floor surface, 13t...Groove, 13b...Backfilling material, 1
5...Inductive edge. Applicant Shinko Electric Co., Ltd.

Claims (1)

[Claims] In the method of laying a guide wire on the floor that generates a magnetic field that generates an electromotive force in the pick-up coil Kll installed in the electromagnetic induction vehicle and guides the electromagnetic induction vehicle, if the guide wire crosses a magnetic material, the electromagnetic The induction wire is electromagnetically connected until the induced voltage generated in the pickup coil when the induction vehicle is traveling on the magnetic material becomes approximately the same magnitude as the induced voltage generated in the pickup coil when the vehicle is traveling on a non-magnetic material. A method for laying a guide wire for an electric 11# guide vehicle, characterized by winding the wire on a magnetic material a number of times along the traveling direction of the guide vehicle.